diff --git a/tests/test_fetcher_ng.py b/tests/test_fetcher_ng.py
index dbe9110630..d04b09f427 100644
--- a/tests/test_fetcher_ng.py
+++ b/tests/test_fetcher_ng.py
@@ -94,7 +94,7 @@ def test_fetch_in_chunks(self) -> None:
     # Incorrect URL parsing
     def test_url_parsing(self) -> None:
         with self.assertRaises(exceptions.DownloadError):
-            self.fetcher.fetch("missing-scheme-and-hostname-in-url")
+            self.fetcher.fetch("http://invalid/")
 
     # File not found error
     def test_http_error(self) -> None:
diff --git a/tests/test_updater_ng.py b/tests/test_updater_ng.py
index 2fa79a37fe..c130ff0559 100644
--- a/tests/test_updater_ng.py
+++ b/tests/test_updater_ng.py
@@ -316,7 +316,7 @@ def test_persist_metadata_fails(
     def test_invalid_target_base_url(self) -> None:
         info = TargetFile(1, {"sha256": ""}, "targetpath")
         with self.assertRaises(exceptions.DownloadError):
-            self.updater.download_target(info, target_base_url="invalid_url")
+            self.updater.download_target(info, target_base_url="http://invalid/")
 
     def test_non_existing_target_file(self) -> None:
         info = TargetFile(1, {"sha256": ""}, "/non_existing_file.txt")